Question: Which hydroelectric dam produces the most energy?
Paraphrase: Give me the name of the hydroelectric dam that produces the most energy?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q12323 . ?ent wdt:P2109 ?obj . ?ent wdt:P31 wd:Q15911738 } ORDER BY DESC(?obj)LIMIT 5 
Answer: Baihetan Dam, Belo Monte Dam, Wudongde Hydropower Station, São Luiz do Tapajós Dam, Xiangjiaba Dam